My 1987 FC doors need to be slammed for them to close. Does anybody know whats causing this? Are they just things that come with a 30 year old car? If anybody can help, that would be great!

 

Over time, the hinges can loosen and cause the door to sag. The best way to fix this is to take the fender off, loosen the hind bolts that attach to the body just a bit, and then close the door and tighten the hinges again. Might also require new hinges.